<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		
		<style>
			*{
				border: 1px solid black;
				padding: 0px;
				margin: 0px;
			}
			span{
				width: 100px;
			}
			
			
		</style>
	</head>
	<body>
		块级元素
		<div></div>
		<h1>aasda</h1>
		<li>asd </li>
		<p>ass</p>
		
		行内元素
		<span>asdas</span>
		<a>asda</a>
		<input type="text"/>
		<img />
		
		
	</body>
</html>
